SU815722A1 - Interface - Google Patents

Description

(54) DEVICE FOR PAIRING

The invention relates to computing and is intended for systems for resetting and processing data. A device is interfaced with terminals, containing a communication unit with an interface, a switchboard containing circuits 1. A disadvantage of this device is the lack of possibility to interface homogeneous computers. The closest in technical essence to the invention is an interface device comprising a communication unit connected to the control unit by the encoder-encoder, the first, second and third registers, amplifiers, the first inputs and outputs of which are connected to the information bus associated with the input and output of the control unit, the input and output of the second register and the outputs of the third register, the second outputs to the first inputs of the fourth register, the second inputs of which are connected to the second inputs of the amplifiers and the outputs of the fifth register, the first The second input is connected to the inputs of the encoder encoder, the first, second and third registers and the output of the control unit, the second input to the third output of the fourth register, the fourth and fifth outputs of which are connected respectively to the inputs of the first register and the control unit, the input and output of the decoder The encoder is connected to the input and output of the fifth register 2. A disadvantage of this device is the impossibility of establishing communication with similar interface devices. The purpose of the invention is to expand the field of application of the device by providing a connection between similar and diverse devices. The goal is achieved in that the device contains a block of requests, the first and second inputs of which are connected to the information bus associated with the first inputs and outputs of amplifiers, the third input - with the first output of the third register, the fourth input - with the sixth output of the fourth register, the fifth input, first and second outputs, respectively, with the output and inputs of the control unit. In addition, the query block contains two AND elements, two NOT elements, a trigger and an OR element, the first input of which is connected to the output of the first AND element, the second input to the output of the second AND element, the first input of which is connected to the trigger input, the second input - the input of the first element is NOT; the third input is with the output of the second element NOT and the first input of the first element I, the second input of which is connected to the output of the first element NOT.

FIG. 1 is a block diagram of the device; in fig. 2 - functional block query block; in fig. 3 - time diagram of the query block.

The device contains a communication unit 1, a decoder-encoder 2, the first 3, the second 4 and the third 5 registers, the control unit 6, the fifth 7 and fourth 8 registers, the request unit 9, amplifiers 10, the first AND element, the first And 12 element , element 13 OR, the second element 14 is NOT, the second element is 15 AND and the trigger 16.

The device works as follows.

The subscriber-sensor (ND, for example a computer) in the sequence of signals of the initial sample sets the address of the subscriber-receiver (PM) in the decoder-encoder 2 addresses through the unit 1 communication with the channel. Block 1 decrypts the incoming address and exhibits. There is a corresponding output signal. If the interface device is not busy, then the control unit 6 sets in one state the corresponding subscriber of the receiver in the fifth register of 7 subscribers. In this case, a high potential appears at one of the outputs and the amplifiers 10 of the communication signals with the selected receiver subscriber are connected to the device. Further, the subscriber-transmitter enters into the third register 5 commands the command “Record, which goes through the information bus to the amplifiers 10 and, from their outputs, to the interface of the subscriber-receiver.

In the receiver-receiver interface, the Recording via amplifiers 10 command is entered into the fourth call register 8, which places the corresponding signal at its output. At the same time, the call signal enters control unit 6, and, if the device is not busy, the signal from the output of the latter sets to one the corresponding subscriber to the transmitter in the fifth register of 7 subscribers. In this case, a high potential appears on one of the outlets, the amplifiers 10 are connected to the device, and the fourth call register 8 sets in the first state register 3 a pointer to the Attention that goes to the receiving subscriber through the communication unit 1 the output of the control unit 6 in the signal sequence at the request of the subscriber.

The response of the subscriber-receiver to the pointer "Attention is entry into

the signal sequence of the initial sampling of the command “Reading to the third register 5, which goes to the first input of the second element 15 AND block 9 requests (Fig. 2), and through the information bar and to the inputs

amplifiers 10 and c. the output of the latter - to the interface of the subscriber-transmitter. Simultaneously with the coincidence of subscriber numbers listed in the Fifth 7th and Fourth 1st and 8th Registers, a high potential appears at the output of the fourth register 8,

preparing the trigger 16 end of the exchange for the installation. When the signals from the outputs of amplifiers 12 are received at the third input of the first element 12 AND of the Read command, and at high levels of signals at the first and second inputs of the last at its output, a request signal is produced (Fig. 3), which through element 13 OR enters block 6 management The control unit 6 initiates a data transmission sequence, as a result of which the subscriber transmitter

0 enters into the second register 4 information which, on a signal from the output of control unit 6, passes through the data bus and amplifiers 10 to the interface of the receiver-receiver. With this in

5, the control unit 6 generates a strobe signal INF, which enters the request block 9 for the input of the second element 14 NOT and then from the output of the last to the first input of the first element 12 I, blocking the request signal at its output. When a receiver subscriber arrives at the interface device in the strobe Info request block 9 through amplifiers 10 at the second input of the second element 15 And, and at high signal levels at the first and third inputs of the last, at its output a request signal is produced, which through element 13 OR enters the block 6 controls The control unit 6 initiates a data transmission sequence, as a result of which information is sent to the subscriber via the communication unit 1. In this case, at the output of the control unit 6, an INF signal is generated, which enters the unit

9 requests to the input of the second element 14 NOT and from its output to the third input of the second element 15 I block the request signal

45 at his exit. Simultaneously INF signal through the information bus and amplifiers

10 is provided to the subscriber-transmitter interface. In a similar interface device of the subscriber-transmitter, the INF signal is supplied through amplification 10 to control unit 6, which removes its INF signal. In turn, the control unit 6 in the interface of the subscriber-receiver to remove the INF signal picks up its INF signal at the corresponding output. In addition, in block 9, the requests of the interface device of the subscriber-transmitter signals at all inputs of the first element 12 And take a single

the value in the output of element 13 OR a request signal is generated and the data transmission cycle is repeated.

At the end of the data transfer, when forming the next request, the subscriber-transmitter enters the sequence of termination signals, as a result of which the command "Write in the third register 5" is reset. In the interface of the receiver-subscriber to remove the command "Write at the corresponding input in the fourth register 8, its output also takes a signal. In this case, the trigger 16 is set to the single state by the single input, the signal from the output of which enters the control unit 6. The latter initiates a sequence of end signals, as a result of which the command "Read in the third register 5" is reset, sets the trigger 16 to the zero state in block 9 of the request, and the second element 15 And removes the request signal at its output. The interface is free.

The use of the proposed interface to create multi-machine systems simplifies the problem of computer integration.

Claims (2)

1. An interface device comprising a communication unit connected to the control unit, the decoder-encoder, the first, second and third registers, amplifiers, the first inputs and outputs of which are connected to the information bus connected to the input and output of the control unit, input and output of the second register and outputs of the third register, the second outputs - the first inputs of the fourth register, the second inputs of which are connected to the second inputs of amplifiers and outputs of the fifth register, the first input of which is connected to the inputs of the decoder-encoder, ne Vågå, second and third registers and the output of the control unit, the second input - to the output of the fourth register to the third, fourth and fifth outputs which are respectively connected to first inputs The 5 registers and the control unit, the input and output of the encoder-encoder are connected to the input and output of the fifth register, characterized in that, in order to expand the field of application of the device by providing communication between similar and different types of devices, it contains a block of requests, the first and the second inputs of which are connected to the information bus associated with the first inputs and outputs of the amplifiers, the third input with the first output of the third register, the fourth input with the sixth output of the fourth register, the fifth input, the first and second outputs ootvetstvenno yield and the inputs of the control unit. 2. The device according to claim 1, characterized by 0 in that the query block contains two AND elements, two NOT elements, a trigger and an OR element, the first input of which is connected to the output of the first AND element, the second input is connected to the output of the second AND element, the first input of which is connected to the trigger input, the second input with the input of the first element is NOT, the third input is with the output of the second element is NOT and the first input of the first element is AND, the second input of which is connected to the output of the first element is NOT. 0Sources of information taken into account in the examination 1.Vakulov G.F., Shishlov V.I. and Yakovlev N.E. Hardware hardware for computer interface in the system of automation of scientific research. - Conference proceedings 5 "Automation of scientific research based on the use of computers, Novosibirsk, 1977. 2. Bochin B.V., Elkin Yu.V. and Neustroyev P.V. Collective controller L 330. 0 Preprint-284 LNPI them. B.P.Konstantinov of the USSR Academy of Sciences, Leningrad, 1976.